Collected here on four DVDs are 29 complete training and public information films produced during the war years 1940–43. The first disc features the commissioning of the HMS Howe, London, and King George V; several Flower-class corvettes; and scenes of naval combat. Disc two looks at carrier operations and landing techniques, fighter school, catapult shops, and U-boat recognition. The third disc examines the duties of helmsmen and lookouts, raising steam on a destroyer, on-board safety routines, and internal communications. The last DVD covers warship identification for Allied pilots, the Sea Scouts, the Submarine Detection Branch, a routine sub patrol, and more.